def convertRotMatToRisoeU(rMats, U0, symTag='Oh'):
"""
Makes GrainSpotter gff ouput
U11 U12 U13 U21 U22 U23 U13 U23 U33
and takes it into the LLNL/APS frame of reference
Urows comes from grainspotter's gff output
U0 comes from XRD.crystallography.latticeVectors.U0
"""
R = hexrd.XRD.Rotations # formerly import
numU = num.shape(num.atleast_3d(rMats))[0]
Rsamp = num.dot( R.rotMatOfExpMap(piby2*Zl), R.rotMatOfExpMap(piby2*Yl) )
qin = R.quatOfRotMat(num.atleast_3d(rMats))
print "quaternions in (LLNL convention):"
print qin.T
qout = num.dot( R.quatProductMatrix( R.quatOfRotMat(Rsamp.T), mult='left' ), \
num.dot( R.quatProductMatrix( R.quatOfRotMat(U0), mult='right'), \
qin ).squeeze() ).squeeze()
if qout.ndim == 1:
qout = toFundamentalRegion(qout.reshape(4, 1), crysSym=symTag, sampSym=None)
else:
qout = toFundamentalRegion(qout, crysSym=symTag, sampSym=None)
print "quaternions out (Risoe convention, symmetrically reduced)"
print qout.T
Uout = R.rotMatOfQuat(qout)
return Uout
def convertUToRotMat(Urows, U0, symTag='Oh'):
"""
Takes GrainSpotter gff ouput
U11 U12 U13 U21 U22 U23 U13 U23 U33
and takes it into the LLNL/APS frame of reference
Urows comes from grainspotter's gff output
U0 comes from XRD.crystallography.latticeVectors.U0
"""
R = hexrd.XRD.Rotations
numU, testDim = Urows.shape
assert testDim == 9, "Your input must have 9 columns; yours has %d" % (testDim)
Rsamp = num.dot( R.rotMatOfExpMap(piby2*Zl), R.rotMatOfExpMap(piby2*Yl) )
qin = R.quatOfRotMat(Urows.reshape(numU, 3, 3))
print "quaternions in (Risoe convention):"
print qin.T
qout = num.dot( R.quatProductMatrix( R.quatOfRotMat(Rsamp), mult='left' ), \
num.dot( R.quatProductMatrix( R.quatOfRotMat(U0.T), mult='right'), \
qin ).squeeze() ).squeeze()
if qout.ndim == 1:
qout = toFundamentalRegion(qout.reshape(4, 1), crysSym=symTag, sampSym=None)
else:
qout = toFundamentalRegion(qout, crysSym=symTag, sampSym=None)
print "quaternions out (LLNL convention, symmetrically reduced)"
print qout.T
Uout = R.rotMatOfQuat(qout)
return Uout